Compact multiband inverted-F antenna

a multi-band, compact technology, applied in the field of radio frequency antennas, can solve the problem of limiting the size of the antenna structur

Active Publication Date: 2005-09-13
WI LAN INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This physical location requirement, manufacturability considerations, and the fragility of many internal antenna structures, result in design decisions to mount antenna structures on the electronic devices' printed circuit boards.
However, mounting the antenna on the circuit board occupies printed circuit board area and limits the size of the antenna structure in an effort to minimize printed circuit board size.

Method used

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  • Compact multiband inverted-F antenna
  • Compact multiband inverted-F antenna
  • Compact multiband inverted-F antenna

Examples

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Embodiment Construction

[0015]As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms as illustrated in the non-limiting exemplary embodiments of FIGS. 3, 4, 5, 6 and 7. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure. Further, the terms and phrases used herein are not intended to be limiting; but rather, to provide an understandable description of the invention.

[0016]The terms “a” or “an”, as used herein, are defined as one or more than one. The term plurality, as used herein, is defined as two or more than two. The term another, as used herein, is defined as at least a second or more. The ...

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Abstract

A compact multiband Inverted-F antenna (110) that has a compact form factor and is particularly suited for manufacturability and inclusion into small form-factor devices. The Inverted-F Antenna (110) includes a first arm (150) and a substantially parallel second arm (152) connected by a conductive bridge (206). An RF feed that has an RF contact (126) and a ground contact (124) is attached to a middle portion of the second arm (150). The Inverted-F antenna (110) is suitable for mounting on an external face of a non-conductive support (112). The RF feed (150, 152) extends through the non-conductive support to facilitate electrical connection to RF circuits (108). The Inverted-F Antenna (110) has a three band RF characteristic (300), with the upper two bands chosen to form a single, continuous RF band (304).

Description

FIELD OF THE INVENTION[0001]The present invention generally relates to the field of radio frequency antennas and more particularly to compact, multiple band antennas.BACKGROUND OF THE INVENTION[0002]Radio communication devices are increasingly being used to communicate in multiple RF bands. An example of a multiple band RF device is a device that is able to communicate by using either the 802.11(b) or the 802.11(a) standard. The 802.11(b) standard uses RF signals in the region near 2.4 GHz and the 802.11(a) standard uses RF signals that cover a broader frequency range in the region near 5.0 GHz. It is often desirable, especially in small and / or portable devices, to minimize the number of antennas that are used on the device, and using a single antenna to cover multiple bands generally provides savings in size and manufacturing cost. Antennas for portable electronics are typically mounted inside the devices' housing in order to physically protect the antenna structure.[0003]RF antenn...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H01Q1/24
CPCH01Q1/243H01Q9/42
Inventor MATTSSON, JAN-OVE U.ARON, ADAM R.PONCE DE LEON, LORENZO A.SLIPY, MICHAEL J.
Owner WI LAN INC
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